Update git submodules

* Update docs/submodules/snaps from branch 'master'
  - Created domain class for roles.

    Create Role domain class so keystone_utils.py functions returning
    role objects will not be leaking out implementation details as each
    API version can change these data structures and this should all be
    handled by the SNAPS neutron utility.

    JIRA: SNAPS-119

    Change-Id: I6918a45c1c414ee6b104ec36e63c540d6f656e30
    Signed-off-by: spisarski <s.pisarski@cablelabs.com>

diff --git a/docs/submodules/snaps b/docs/submodules/snaps
index e6326cd..317a6f8 160000 (submodule)
--- a/docs/submodules/snaps
+++ b/docs/submodules/snaps
@@ -1 +1 @@
-Subproject commit e6326cd5e826d19e4dd2b096c17aff35da1757b3
+Subproject commit 317a6f8c44efbefaeb800edafcc6fb4cb88bedea